Monday, August 23, 2010
EXAMPLE WEBSITE!
I did my first example/practice for my assignment on a website called Scrapblog, on this website you can edit pictures, make albums, books etc. I have done a book about Wireless broadband, if you want to have a look then go on this website http://www.scrapblog.com/builder/?path=/scrapblog/2760720
Thursday, August 5, 2010
Wireless and Cable Broadband :)
Wireless Broadband:
Wireless is a new technology that provides high-speed wireless internet and data network access over a wide area. Examples of wireless broadband providers are: Optus, 3, Telstra, Dodo, I-primus etc. The cost varies depending on your plan, if it is a 1GB plan it’ll be $13 or If the is a 12GB plan then it’ll be $79, so the cost varies depending on your plan and GB. The data transfer at speed of two megabytes for second. Some advantages of wireless broadband are that it gives a really fast broadband speed, you can use it on cell phones, and other mobiles and it is very much affordable. Some disadvantages of wireless broadband would be it is a bit difficult to set up, there is a risk of outsiders accessing you network if don’t secure it properly, sometimes it can considerably slower than a wired network because the wireless connection may not get to where you computer/laptop is easily.
Cable Broadband:
Cable internet is a form of broadband internet access which requires cable to get connected to the internet. It is only available to people who have a cable service in the area. Examples of connection providers are Optus, Telstra, i-Primus and Bigpond. The prices vary from plan to plan, GB to GB. If your usage is 1 GB, you would be pay around $13/month or if it is 12GB then $79/month. The connection speed is 100 times faster than dialup connection, you can download stuff in seconds/minutes, it doesn’t affect the phone line- internet and landline can work at the same time, the internet connection is always on. There aren’t many disadvantages of cable internet but some are, monthly fees, security risk, may not be available in rural or remote areas.
Wireless is a new technology that provides high-speed wireless internet and data network access over a wide area. Examples of wireless broadband providers are: Optus, 3, Telstra, Dodo, I-primus etc. The cost varies depending on your plan, if it is a 1GB plan it’ll be $13 or If the is a 12GB plan then it’ll be $79, so the cost varies depending on your plan and GB. The data transfer at speed of two megabytes for second. Some advantages of wireless broadband are that it gives a really fast broadband speed, you can use it on cell phones, and other mobiles and it is very much affordable. Some disadvantages of wireless broadband would be it is a bit difficult to set up, there is a risk of outsiders accessing you network if don’t secure it properly, sometimes it can considerably slower than a wired network because the wireless connection may not get to where you computer/laptop is easily.
Cable Broadband:
Cable internet is a form of broadband internet access which requires cable to get connected to the internet. It is only available to people who have a cable service in the area. Examples of connection providers are Optus, Telstra, i-Primus and Bigpond. The prices vary from plan to plan, GB to GB. If your usage is 1 GB, you would be pay around $13/month or if it is 12GB then $79/month. The connection speed is 100 times faster than dialup connection, you can download stuff in seconds/minutes, it doesn’t affect the phone line- internet and landline can work at the same time, the internet connection is always on. There aren’t many disadvantages of cable internet but some are, monthly fees, security risk, may not be available in rural or remote areas.
Monday, June 21, 2010
Video =]
We have started our how to use facebook tutorial...at first we were struggling to use Webinaria...but then we were fine...now we are using webinaria to video our tutorial...i am doing the recording and julie ias editing it...:)
Tuesday, June 1, 2010
VIDEO :)
We are no more doing the dance tutrorial, Abuk will now be doing her assignment on her own and Julie and I are doing a computer tutorial, it will require us using a camcorder. We are looking for a free camcorder download, then we will make our tutorial on application on the computer such as how to use facebook or paint or other applications... :)
DATA COMPRESSION!!
What is data compression?
It is the process of encoding information using less bits than an unencoded.
What is a data compression ratio?
It is also known as compression power, data compression is a computer-science term used to quantify the reduction in data-representation size produced by a data compression alogirthm.
Why is data compression an important technique for the online world?
It is important because, it helps compress data so it can be downloaded or uploaded to anything or from anything.
What is the difference betweeen Lossy and Lossless data compression?
Lossless data compression uses data compression algorithms which allow the exact original data to be recreated from the compressed data, where as Lossy data retrieves data that may be different form the original one but it is still 'close enough' which is useful in some way.
Which method offers the greatest compression ratio?
Lossless because through that method, none of the information is lost it compresses the exact data.
Why is human psychology and perception an important factor in method of Lossy compression?
An important factor is that it allows us to get rid of data we dont notice. For example: certain high frequency of sounds.
Name Lossy file formats for audio, still image and video format.
There are heaps of formats, names of some are; Mp3, JPEG, Mpeg.
It is the process of encoding information using less bits than an unencoded.
What is a data compression ratio?
It is also known as compression power, data compression is a computer-science term used to quantify the reduction in data-representation size produced by a data compression alogirthm.
Why is data compression an important technique for the online world?
It is important because, it helps compress data so it can be downloaded or uploaded to anything or from anything.
What is the difference betweeen Lossy and Lossless data compression?
Lossless data compression uses data compression algorithms which allow the exact original data to be recreated from the compressed data, where as Lossy data retrieves data that may be different form the original one but it is still 'close enough' which is useful in some way.
Which method offers the greatest compression ratio?
Lossless because through that method, none of the information is lost it compresses the exact data.
Why is human psychology and perception an important factor in method of Lossy compression?
An important factor is that it allows us to get rid of data we dont notice. For example: certain high frequency of sounds.
Name Lossy file formats for audio, still image and video format.
There are heaps of formats, names of some are; Mp3, JPEG, Mpeg.
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